HSP Deluxe No Bridge/ With Cold Side Bundle Kit For 2004.5-2005 Silverado/Sierra 2500/3500-RAW Differential Covers and Parts " This heavier spring will help

This heavier spring will help control fuel delivery and smoke output under low boost

and GM vehicles

New HSM bearing housing

From dusk until morning your FJ will be the pack leader with low profile solution

HSP Deluxe No Bridge/ With Cold Side Bundle Kit For 2004.5-2005 Silverado/Sierra 2500/3500-RAW Differential Covers and Parts " This heavier spring will helpThe 294 HSP is best known as the Max Air Flow Bundle for the 2004. 5 and 2005 LLY Duramax Chevrolet and GMC trucks. This bundle kit features everything you could need from the HSP Diesel lineup to make more power and get the maximum performance out of your LLY Duramax all while keeping your factory emissions! What is the Max Air Flow Bundle for the LLY? The Max Air Flow Bundle for the LLY is a complete kit from HSP Diesel. Now what we mean by that is